#!/usr/bin/env node

//const msg='d2FuZ2Rpbmc6MTIzNDU2';
//const buf = Buffer.from(msg,'base64');
//const usr_pwd=buf.toString('utf8');
//
//console.log(`user name:${usr_pwd.split(':')[0]}\npassword:${usr_pwd.split(':')[1]}`)

if(process.argv.length!==3){
  console.error('命令行格式：cmd base64_string');
    process.exit(1);
    }

    const buf=Buffer.from(process.argv[2],'base64');
    const info=buf.toString('utf8').split(':');

    if(info.length!==2){
      console.error('信息有误！');
          process.exit(2);
         }

          console.log('user name:%s\npassword:%s',info[0],info[1]);

    }
}
